THE EFFECT OF THE PROJECT BASED LEARNING MODEL IN STUDENTS’ CRITICAL THINKING SKILLS ON ENVIRONMENTAL POLLUTION SUBJECTS. BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan, [S. l.], v. 9, n. 1, p. 74–80, 2021. DOI: 10.22373/biotik.v9i1.8220. Disponível em: https://jurnal.ar-raniry.ac.id/index.php/biotik/article/view/8220. Acesso em: 5 oct. 2025.